import Vue from 'vue'
import VueRouter from 'vue-router'
import login from '../components/login.vue'
import home from '../components/home.vue'
import welcome from '../components/welcome.vue'
import users from '../components/user/user.vue'
import roles from '../components/roles/roles.vue'
import rights from '../components/rights/rights.vue'
import fenlei from '../components/comd_fen/fenlei.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: login },
  {
    path: '/home',
    component: home,
    redirect: '/welcome',
    children: [
      {
        path: '/welcome', component: welcome
      },
      {
        path: '/users', component: users
      },
      { path: '/roles', component: roles },
      { path: '/rights', component: rights },
      { path: '/categories', component: fenlei }
    ]
  }
]

const router = new VueRouter({
  routes
})
// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next() 表示放行
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  // 没有token，强制跳转到登入页
  if (!tokenStr) return next('/login')
  next()
})

export default router
